Push-button.



A. LUNQBN. PUSH BUTTON. urnroulon rrnn'n 51mm, 1912.

1,085,215v Patented Jan. 27, 1914 opening, each Kbottom of the shell 1 nnrrnn sfrarns ADAM LUNGEN,

PATENT OFFICE.

0F NEW YORK, N. Y., ASSIGNOR T0 EDWARDS & COMPANY, A

CORPORATION OF NEW YORK..

PUSH-BUTTON.

To all lwhom. it may concern:

Be it known that LADAM Luimeig, a citizen of the United States, residing'at the city of New York, in the borough of Bronx and State of New Yorkf'have invented certain new and useful Improvements in Pusli-But tons, of which the followiiigis a full, clear, and exact description.

This invention relates to electric push buttons, and is an improvement over the device shown in Patent No. 731,479, granted to me June 23, 1903, the object being to provide a device which is simple and cheap to con struct and efficient and durable in use, and in particular to provide an improved means for securing the vspring contact arms to the` push button and an improved means for securing ,the contact arms against removal after insertion in the shell of the device. A An embodiment of my invention is shown in the accompanying dravi'fing's, 'in which like. reference characters re applied to like parts throughout. l

In the drawings: Figure 1 is a side elevation of the improved push button. Fig. 2 is a' front elevation. Fig. 3 is a rear elevation., Fig. 4 is a vertical section. Fig. 5 is a vertical section at right angles to Fig. 4. Fig. 6 is a rear elevation of the shell of the device. Fig. 7 is a plan-viewY of an insulating disk. F ig. 8 is a perspective of o neof the frictional retaining members. Fig. '9 is a perspective of one of the Contact pieces and circuit terminals.v Fig. 10 shows. the blank from whichV the spring contact arms are formed.

The d'evice is adapted to be inserted and frictionally held in an opening in a desk or other surface to which it is desired to attach thel same. It comprises a cup shaped shell 1 adapted to be insertedin an opening in the surface to which the button is to be attached, said shell being frictionallyheld in'position by retaining members consisting of pairs of spring ears 2 which engage the wall of the air of ears bein'g connected by a segmentallbase 3 which is secured to the in a manner to be hereinafter described. The shell 1 has an annular vlange 4 at its outer edge which forms a stop when inserting the button .in its openne. Y

2inthe bottom of the shell 1 is an elongated opening the walls of which are cut away at their middle portion forming recesses 6 Specification of Letters Patent.

Patented Jan'. 27, 1914.

7,1912. seriai No. 719,203.

and abutments 7. Inside.l the shell is the movable button proper whichA comprises a disk 8 and cup shaped sheath 9 and which is pushed by the finger to close the circuit. This button carries spring Contact arms which are formed and secured lto the button in the following manner: A fiat piece of metal such as shown in Fig-10 is cut on the lines 10, and the arms 11 beiit up at substantially right angles to the base 12. The arms 11 are transversely elongated', producing headsll and form-'mg shoulders at 14, and the heads 13 are slightly concaved as clearly seen in Fig. 4. The base 12 of the contact arms tits within the cup fshaped metallic sheath.l 9 but is spaced therefrom by the insulating disk 15,' the arms-11 protruding through centrale enings in the insulating disk and .iheath. l he 'disk 8,which ma be of ivory, pearl'or other 'desired material, is then secured by friction within the sheath on, top of the base 12, hereby 'maintaining the contact arms11 in fixed relation to the button without the lise of hails, bent up ears or other external means for securing them to the button. In placing the button in the ar'eidrawn together and inserted through the elongated opening inthe bottom of the shell, and as soon as they have passed through he openingthe springing apart of the arms will cause them to enterr the recesses 6 at the middle portion of the opening 5. In this position the shoulders 14 engage t-he shoulders or abutments 7 and outward movement of the button and the arms'll carried thereby is prevented. A compression sprin theY s ell and the button,but the upward movement of the`button, due to the spring, is limited by the engagement of the shoultherefor.

An insulating disk 17 is secured to the base 3 of the spring ears 2'being interposed between the two and also secured b y-the same rivets. The disk 17 has an :opening 19 therein through which the contact arms .11 Amay move. L Secured on the o'uter side of the insulating disk by hollow rivets outwardly from opening 19. Projecting Y16 is inserted between the bottom ofY ders14 andabutmentsj, which form a stop shell 1 by the hollow rivets 18, the segmental4 20 arethe contact* pieces 21disposed on opposite sides Aof the said contact pieces are arms on wihch theshell, the heads 13 of the spring contact arms binding screws 22 are mounted, and opposite thereto are the inwardly bent ears 23, adapted to tit within the o enings 24 in the insulating disk, whereby t e contact pieces arevprevented from rotating around the hollow securin rivets 20. Lateral projections 25 are also ormed on-the contact pieces 21, the same extending opposite the opening 19 and adapted to be engaged by the heads 13 on the arms 11. The operation of the device is as follows: U on pushing the button inwardly against he spring 16, the heads 13 of the contact arms 11 engage the projections 25 on the contact pieces 21, thus completing the circuit.. When the button is reeased the spring 16 returns the same to its normal position, the engagement of the shoulders 14 and abutments 7 preventing the separation of the button proper from the shell.

Having described my invention, I claim:

1. In a circuit closm device, a button comprising a cup-shape sheath, having a central o ening in its bottom, three superposed dis s contained in said sheath, the intermediate disk bein of conducting material and provided with two circuit closing spring arms projectin therefrom at points inside of its peripery and extending through an orifice provided in one of'the other disks and through the central opening in the bottom ofthe sheath, in combination with a air of terminals adapted to be bridged y said arms,

2. In a push button, a shell having an opening in its bottom, with recesses in the walls of said opening, forming abutments, a button proper depressible in said shell, resilient means for retracting said button, and resilient contact arms movable in said rccesses and having enlarged ends forming shoulders adapted to engage said abutments, whereby the retraction of the button is limited and its rotation prevented.

3. In a push button, a shell having an opening in its bottom, with recesses in the walls of said opening forming abutments, a button proper carrying contact arms having enlarged ends, formin shoulders, said arms being resilient and a apted to be inserted through said openin whereby on insertion of the enlarged en s through the opening the arms will engage the recesses and retraction of the arms will be limited by the enga ement of said shoulders and abutments.

' n witness whereof, I subscribe my signature, in the presence of two witnesses.

ADAM LUNGEN.

Witnesses HORACE WHITMAN, Gnomi: Parcs.

Goptcl o( thin patent may be obtained for tive cento each, by addreutng the Commissioner of retenu, Washington, D. 0." 

